src/gtk/dialog.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dialog.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "dialog.h"
  12 #endif
  13
  14 #include "wx/dialog.h"
  15 #include "wx/frame.h"
  16 #include "wx/app.h"
  17
  18 #include "gdk/gdk.h"
  19 #include "gtk/gtk.h"
  20 #include "wx/gtk/win_gtk.h"
  21
  22 //-----------------------------------------------------------------------------
  23
  24 extern wxList wxPendingDelete;
  25
  26 //-----------------------------------------------------------------------------
  27 // "delete_event"
  28 //-----------------------------------------------------------------------------
  29
  30 bool gtk_dialog_delete_callback( GtkWidget *WXUNUSED(widget), GdkEvent *WXUNUSED(event), wxDialog *win )
  31 {
  32 /*
  33     printf( "OnDelete from " );
  34     if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
  35         printf( win->GetClassInfo()->GetClassName() );
  36     printf( ".\n" );
  37 */
  38
  39     win->Close();
  40
  41     return TRUE;
  42 }
  43
  44 //-----------------------------------------------------------------------------
  45 // "size_allocate"
  46 //-----------------------------------------------------------------------------
  47
  48 static void gtk_dialog_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxDialog *win )
  49 {
  50     if (!win->HasVMT()) return;
  51
  52 /*
  53     printf( "OnDialogResize from " );
  54     if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
  55         printf( win->GetClassInfo()->GetClassName() );
  56     printf( ".\n" );
  57 */
  58
  59     win->GtkOnSize( alloc->x, alloc->y, alloc->width, alloc->height );
  60 }
  61
  62 //-----------------------------------------------------------------------------
  63 // "configure_event"
  64 //-----------------------------------------------------------------------------
  65
  66 static gint gtk_dialog_configure_callback( GtkWidget *WXUNUSED(widget), GdkEventConfigure *event, wxDialog *win )
  67 {
  68     if (!win->HasVMT()) return FALSE;
  69
  70     win->m_x = event->x;
  71     win->m_y = event->y;
  72
  73     wxMoveEvent mevent( wxPoint(win->m_x,win->m_y), win->GetId() );
  74     mevent.SetEventObject( win );
  75     win->GetEventHandler()->ProcessEvent( mevent );
  76
  77     return FALSE;
  78 }
  79
  80 //-----------------------------------------------------------------------------
  81 // wxDialog
  82 //-----------------------------------------------------------------------------
  83
  84 BEGIN_EVENT_TABLE(wxDialog,wxPanel)
  85     EVT_BUTTON  (wxID_OK,       wxDialog::OnOK)
  86     EVT_BUTTON  (wxID_CANCEL,   wxDialog::OnCancel)
  87     EVT_BUTTON  (wxID_APPLY,    wxDialog::OnApply)
  88     EVT_SIZE    (wxDialog::OnSize)
  89     EVT_CLOSE   (wxDialog::OnCloseWindow)
  90 END_EVENT_TABLE()
  91
  92 IMPLEMENT_DYNAMIC_CLASS(wxDialog,wxPanel)
  93
  94 wxDialog::wxDialog()
  95 {
  96     m_title = "";
  97     m_modalShowing = FALSE;
  98 }
  99
 100 wxDialog::wxDialog( wxWindow *parent,
 101                     wxWindowID id, const wxString &title,
 102                     const wxPoint &pos, const wxSize &size,
 103                     long style, const wxString &name )
 104 {
 105     m_modalShowing = FALSE;
 106     Create( parent, id, title, pos, size, style, name );
 107 }
 108
 109 bool wxDialog::Create( wxWindow *parent,
 110                        wxWindowID id, const wxString &title,
 111                        const wxPoint &pos, const wxSize &size,
 112                        long style, const wxString &name )
 113 {
 114     wxTopLevelWindows.Append( this );
 115
 116     m_needParent = FALSE;
 117
 118     PreCreation( parent, id, pos, size, style, name );
 119
 120     m_widget = gtk_window_new( GTK_WINDOW_TOPLEVEL );
 121     GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_FOCUS );
 122
 123     gtk_widget_set( m_widget, "GtkWindow::allow_shrink", TRUE, NULL);
 124
 125     gtk_signal_connect( GTK_OBJECT(m_widget), "delete_event",
 126         GTK_SIGNAL_FUNC(gtk_dialog_delete_callback), (gpointer)this );
 127
 128     m_wxwindow = gtk_myfixed_new();
 129     gtk_widget_show( m_wxwindow );
 130     GTK_WIDGET_UNSET_FLAGS( m_wxwindow, GTK_CAN_FOCUS );
 131
 132     gtk_container_add( GTK_CONTAINER(m_widget), m_wxwindow );
 133
 134     SetTitle( title );
 135
 136     if ((m_x != -1) || (m_y != -1))
 137         gtk_widget_set_uposition( m_widget, m_x, m_y );
 138
 139     gtk_widget_set_usize( m_widget, m_width, m_height );
 140
 141     gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate",
 142         GTK_SIGNAL_FUNC(gtk_dialog_size_callback), (gpointer)this );
 143
 144     gtk_signal_connect( GTK_OBJECT(m_widget), "configure_event",
 145         GTK_SIGNAL_FUNC(gtk_dialog_configure_callback), (gpointer)this );
 146
 147     if (m_parent) m_parent->AddChild( this );
 148
 149     PostCreation();
 150
 151     return TRUE;
 152 }
 153
 154 wxDialog::~wxDialog()
 155 {
 156     wxTopLevelWindows.DeleteObject( this );
 157
 158     if (wxTheApp->GetTopWindow() == this)
 159     {
 160         wxTheApp->SetTopWindow( (wxWindow*) NULL );
 161     }
 162
 163     if (wxTopLevelWindows.Number() == 0)
 164     {
 165         wxTheApp->ExitMainLoop();
 166     }
 167 }
 168
 169 void wxDialog::SetTitle( const wxString& title )
 170 {
 171     m_title = title;
 172     if (m_title.IsNull()) m_title = "";
 173     gtk_window_set_title( GTK_WINDOW(m_widget), m_title );
 174 }
 175
 176 wxString wxDialog::GetTitle() const
 177 {
 178     return (wxString&)m_title;
 179 }
 180
 181 void wxDialog::OnApply( wxCommandEvent &WXUNUSED(event) )
 182 {
 183     if (Validate()) TransferDataFromWindow();
 184 }
 185
 186 void wxDialog::OnCancel( wxCommandEvent &WXUNUSED(event) )
 187 {
 188     if (IsModal())
 189     {
 190         EndModal(wxID_CANCEL);
 191     }
 192     else
 193     {
 194         SetReturnCode(wxID_CANCEL);
 195         this->Show(FALSE);
 196     }
 197 }
 198
 199 void wxDialog::OnOK( wxCommandEvent &WXUNUSED(event) )
 200 {
 201     if ( Validate() && TransferDataFromWindow())
 202     {
 203         if (IsModal())
 204         {
 205             EndModal(wxID_OK);
 206         }
 207         else
 208         {
 209             SetReturnCode(wxID_OK);
 210             this->Show(FALSE);
 211         }
 212     }
 213 }
 214
 215 void wxDialog::OnPaint( wxPaintEvent& WXUNUSED(event) )
 216 {
 217   // yes
 218 }
 219
 220 bool wxDialog::OnClose()
 221 {
 222     static wxList closing;
 223
 224     if (closing.Member(this)) return FALSE;   // no loops
 225
 226     closing.Append(this);
 227
 228     wxCommandEvent cancelEvent(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
 229     cancelEvent.SetEventObject( this );
 230     GetEventHandler()->ProcessEvent(cancelEvent);
 231     closing.DeleteObject(this);
 232
 233     return FALSE;
 234 }
 235
 236 bool wxDialog::Destroy()
 237 {
 238     if (!wxPendingDelete.Member(this)) wxPendingDelete.Append(this);
 239
 240     return TRUE;
 241 }
 242
 243 void wxDialog::OnCloseWindow( wxCloseEvent& event )
 244 {
 245     if (GetEventHandler()->OnClose() || event.GetForce())
 246     {
 247         this->Destroy();
 248     }
 249 }
 250
 251 void wxDialog::GtkOnSize( int WXUNUSED(x), int WXUNUSED(y), int width, int height )
 252 {
 253     // due to a bug in gtk, x,y are always 0
 254     // m_x = x;
 255     // m_y = y;
 256
 257     if ((m_height == height) && (m_width == width) &&
 258         (m_sizeSet)) return;
 259     if (!m_wxwindow) return;
 260
 261     m_width = width;
 262     m_height = height;
 263
 264     if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
 265     if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
 266     if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
 267     if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
 268
 269     gtk_widget_set_usize( m_widget, m_width, m_height );
 270
 271     m_sizeSet = TRUE;
 272
 273     wxSizeEvent event( wxSize(m_width,m_height), GetId() );
 274     event.SetEventObject( this );
 275     GetEventHandler()->ProcessEvent( event );
 276 }
 277
 278 void wxDialog::OnSize( wxSizeEvent &WXUNUSED(event) )
 279 {
 280     wxASSERT_MSG( (m_widget != NULL), "invalid dialog" );
 281
 282     if (GetAutoLayout())
 283     {
 284         Layout();
 285     }
 286     else
 287     {
 288         // no child: go out !
 289         if (!GetChildren().First()) return;
 290
 291         // do we have exactly one child?
 292         wxWindow *child = (wxWindow *) NULL;
 293         for(wxNode *node = GetChildren().First(); node; node = node->Next())
 294         {
 295             wxWindow *win = (wxWindow *)node->Data();
 296             if (!wxIS_KIND_OF(win,wxFrame) && !wxIS_KIND_OF(win,wxDialog))
 297             {
 298                 // it's the second one: do nothing
 299                 if (child) return;
 300                 child = win;
 301             }
 302         }
 303
 304         // yes: set it's size to fill all the frame
 305         int client_x, client_y;
 306         GetClientSize( &client_x, &client_y );
 307         child->SetSize( 1, 1, client_x-2, client_y);
 308     }
 309 }
 310
 311 void wxDialog::SetSize( int x, int y, int width, int height, int sizeFlags )
 312 {
 313     wxASSERT_MSG( (m_widget != NULL), "invalid window" );
 314
 315     // Don't do anything for children of wxMDIChildFrame
 316     if (!m_wxwindow) return;
 317
 318     if (m_resizing) return; // I don't like recursions
 319     m_resizing = TRUE;
 320
 321     int old_x = m_x;
 322     int old_y = m_y;
 323     int old_width = m_width;
 324     int old_height = m_height;
 325
 326     if ((sizeFlags & wxSIZE_USE_EXISTING) == wxSIZE_USE_EXISTING)
 327     {
 328         if (x != -1) m_x = x;
 329         if (y != -1) m_y = y;
 330         if (width != -1) m_width = width;
 331         if (height != -1) m_height = height;
 332     }
 333     else
 334     {
 335         m_x = x;
 336         m_y = y;
 337         m_width = width;
 338         m_height = height;
 339     }
 340
 341     if ((sizeFlags & wxSIZE_AUTO_WIDTH) == wxSIZE_AUTO_WIDTH)
 342     {
 343         if (width == -1) m_width = 80;
 344     }
 345
 346     if ((sizeFlags & wxSIZE_AUTO_HEIGHT) == wxSIZE_AUTO_HEIGHT)
 347     {
 348        if (height == -1) m_height = 26;
 349     }
 350
 351     if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
 352     if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
 353     if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
 354     if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
 355
 356     if ((m_x != -1) || (m_y != -1))
 357     {
 358         if ((m_x != old_x) || (m_y != old_y))
 359             gtk_widget_set_uposition( m_widget, m_x, m_y );
 360     }
 361
 362     if ((m_width != old_width) || (m_height != old_height))
 363     {
 364         gtk_widget_set_usize( m_widget, m_width, m_height );
 365     }
 366
 367     m_sizeSet = TRUE;
 368
 369     wxSizeEvent event( wxSize(m_width,m_height), GetId() );
 370     event.SetEventObject( this );
 371     GetEventHandler()->ProcessEvent( event );
 372
 373     m_resizing = FALSE;
 374 }
 375
 376 void wxDialog::SetSize( int width, int height )
 377 {
 378     SetSize( -1, -1, width, height, wxSIZE_USE_EXISTING );
 379 }
 380
 381 void wxDialog::Centre( int direction )
 382 {
 383     wxASSERT_MSG( (m_widget != NULL), "invalid frame" );
 384
 385     int x = 0;
 386     int y = 0;
 387
 388     if (direction & wxHORIZONTAL == wxHORIZONTAL) x = (gdk_screen_width () - m_width) / 2;
 389     if (direction & wxVERTICAL == wxVERTICAL) y = (gdk_screen_height () - m_height) / 2;
 390
 391     Move( x, y );
 392 }
 393
 394 bool wxDialog::Show( bool show )
 395 {
 396     if (!show && IsModal())
 397     {
 398       EndModal( wxID_CANCEL );
 399     }
 400
 401     wxWindow::Show( show );
 402
 403     if (show) InitDialog();
 404
 405     return TRUE;
 406 }
 407
 408 bool wxDialog::IsModal() const
 409 {
 410     return m_modalShowing;
 411 }
 412
 413 void wxDialog::SetModal( bool WXUNUSED(flag) )
 414 {
 415 /*
 416   if (flag)
 417     m_windowStyle |= wxDIALOG_MODAL;
 418   else
 419     if (m_windowStyle & wxDIALOG_MODAL) m_windowStyle -= wxDIALOG_MODAL;
 420 */
 421     wxFAIL_MSG( "wxDialog:SetModal obsolete now" );
 422 }
 423
 424 int wxDialog::ShowModal()
 425 {
 426     if (IsModal())
 427     {
 428        wxFAIL_MSG( "wxDialog:ShowModal called twice" );
 429        return GetReturnCode();
 430     }
 431
 432     Show( TRUE );
 433
 434     m_modalShowing = TRUE;
 435
 436     gtk_grab_add( m_widget );
 437     gtk_main();
 438     gtk_grab_remove( m_widget );
 439
 440     return GetReturnCode();
 441 }
 442
 443 void wxDialog::EndModal( int retCode )
 444 {
 445     SetReturnCode( retCode );
 446
 447     if (!IsModal())
 448     {
 449         wxFAIL_MSG( "wxDialog:EndModal called twice" );
 450         return;
 451     }
 452
 453     m_modalShowing = FALSE;
 454
 455     gtk_main_quit();
 456
 457     Show( FALSE );
 458 }
 459
 460 void wxDialog::InitDialog()
 461 {
 462     wxWindow::InitDialog();
 463 }
 464
 465 void wxDialog::SetIcon( const wxIcon &icon )
 466 {
 467     m_icon = icon;
 468     if (!icon.Ok()) return;
 469
 470     wxMask *mask = icon.GetMask();
 471     GdkBitmap *bm = (GdkBitmap *) NULL;
 472     if (mask) bm = mask->GetBitmap();
 473
 474     gdk_window_set_icon( m_widget->window, (GdkWindow *) NULL, icon.GetPixmap(), bm );
 475 }